An efficient approach toward the synthesis of phosphorothioate diesters via the schönberg reaction
作者:P.C.J. Kamer、H.C.P.F. Roelen、H. van den Elst、G.A. van der Marel、J.H. van Boom
DOI:10.1016/s0040-4039(00)70669-1
日期:——
Easily accessible phenacetyl or benzoyl disulfide proved to be very convenient reagents for a rapid P-sulfurization of phosphite-triesters and H-phosphonate diesters, respectively.
The base solvolysis of some S-phosphorylated derivatives of 2-mercaptoethanol
作者:D. C. Gay、N. K. Hamer
DOI:10.1039/j29700001123
日期:——
The preparation and base solvolyses of some S-phosphorylated derivatives of 2-mercaptoethanol and related compounds are reported. The fully esterified derivatives possessing favourable stereochemistryrearrange to the O-phosphorylated derivatives which then undergo elimination of an episulphide. In contrast, the mono-esterified derivatives eliminate alkoxide to give the cyclic intermediate [graphic
Oxy- and thio-phosphorus acid derivatives of tin(IV). The crystal and molecular structure of O-methylmethylphosphatotriphenyltin(IV)
作者:J.G. Masters、F.A.K. Nasser、M.B. Hossain、A.P. Hagen、D. van der Helm、J.J. Zuckerman
DOI:10.1016/0022-328x(90)87145-4
日期:1990.3
confirm the presence of tin as tin(IV). The magnitudes of the quadrupole splitting and the ratios of the QS to the IS of both compounds reveal that tin is higher than four coordinated. The solid state structure of II was determined by X-ray diffraction. The compound crystallized in the trigonal space group R with a, b 31.433(15), c 10.259(3) Å, V 8778.2 Å3, Z = 18, Dx 1.56 g cm−3 at 138 K. In the solid state
Study on the Transesterification of Methyl Aryl Phosphorothioates in Methanol Promoted by Cd(II), Mn(II), and a Synthetic Pd(II) Complex
作者:David R. Edwards、Alexei A. Neverov、R. Stan Brown
DOI:10.1021/ic102220m
日期:2011.3.7
e-2C,N)palladium(II) (3), are shown to promote the methanolytic transesterification of O-methyl O-4-nitrophenyl phosphorothioate (2b) at 25 °C with impressive rate accelerations of 106−1011 over the background methoxide promotedreaction. A detailed mechanistic investigation of the methanolytic cleavage of 2a−d having various leaving group aryl substitutions, and particularly the 4-nitrophenyl derivative